Cognizant Algebra Quiz-1

Question 1

Time: 00:00:00
If x3 + y3 = 9 and x + y = 3, then the value of x4+y4 is,

17

17

18

18

19

19

20

20

Question 2

Time: 00:00:00
If x+1/2x = 2, find the value of 8x3+1/x3

40

40

38

38

37

37

36

36

Question 3

Time: 00:00:00
For any real number x the maximum value of 4−6x−x2 is at x=,

4

4

6

6

-3

-3

7

7

Question 4

Time: 00:00:00
If 5√x +12√x =13√x then value of x is,

1

1

2

2

3

3

4

4

Question 5

Time: 00:00:00
if x = (√2 + 1 )–1⁄5 then the value of (x5 – 1⁄x5) is

None of these

None of these

-2

-2

2

2

1

1

Question 6

Time: 00:00:00
If b2 + 1⁄b2 = 1, then value of b3 + 1⁄b3 is

6

6

-4

-4

4

4

zero

zero

Question 7

Time: 00:00:00
If x(1/3) + y(1/3) – z(1/3) = 0 then value of 3xyz.(x + y – z)3  is

Zero

Zero

8

8

4

4

6

6

Question 8

Time: 00:00:00
4/15 of 5/7 of a number is greater than 4/9 of 2/5 of the same number by 8. What is half of that number?

315

315

63

63

416

416

325

325

Question 9

Time: 00:00:00
If \frac{2x}{1+\frac{1}{1+ \frac{x}{1 - x}}} = 1, then find the value of x.

1/3

1/3

2/3

2/3

4/5

4/5

2/7

2/7

Question 10

Time: 00:00:00
Find the value of (1-1/3)(1-1/4)(1-1/5)…(1-1/100).

1/20

1/20

1/50

1/50

1/10

1/10

1/100

1/100

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August 27, 2020